Engine



1935- V H. H. TIMHAN I 2,020,592

ENGINE Filed April 6, 1931 INVENTOR.

ATTORNEY.

Patented Nov. 12, 1935 UNITED STATES PATENT OFIE ENGINE Harold H. Timian, Detroit, Mich., assignor to Continental Motors Corporation, Detroit, Mich., a corporation of Virginia Application April 6, 1931, Serial No. 528,008

9 Claims.

an improved intake manifold structure for an internal combustion engine by providing heated fuel mixture distributing means arranged in a manner to provide for more efiicient engine operation.

A further object of my invention is to construct an intake manifold structure especially adapted for use with an engine of the 8 cylinder in line type, wherein an adequate uniform fuel mixture supply is distributed to said cylinders.

For a more detailed understanding of my invention, reference may be had to the accompanying drawing which illustrates one form which my invention may assume, and in which:

Figure l is a fragmentary side elevational View of an internal combustion engine showing a manifold structure associated therewith and constructed in accordance with my invention,

' Figure 2 is a fragmentary vertical sectional view taken substantially on the line 2-2 of Figure 1,

Figure 3 is a sectional view taken substantially on the line 3-3 of Figure 2,

Figure 4 is a horizontal sectional view taken on the line 4-4 of Figure 2,

Figure 5 is a detail sectional view taken on the line 55 of Figure 1, and

Figure 6 is a plan view of the engine block illustrating somewhat diagrammatically a manifold structure constructed in accordance with my invention and cooperatively associated therewith. In the accompanying drawing I have illustrated a standard form of engine which consists of an engine block I!) having a plurality of cylinders l l and supporting a plurality of intake valves l2. A cylinder head it of usual construction is associated with said block and preferably secured thereto by any suitable means. A manifold structure A is cooperatively associated with this internal combustion engin and preferably includes an exhaust manifold structure A1 and an intake manifold structure A2. The intake manifold 55 structure A2 principally consists of a primary fuel mixture conducting or riser portion 14, a fuel mixture distributing portion l5 and a plurality of runners or manifold branch'portions It and ll communicating with said fuel mixture distributing portions which are located at the junc- .15:

tion of said runners with the riser. Referring to Figures 2 and 3, the various parts of the intake manifold structure are designated in the following manner: a designates the primary fuel mixture conducting or riser portion which is 'ar- 1o.

ranged in communication with a suitable fuel mixture forming device It, said riser portion being provided with an enlarged portion 0. The riser portion is divided by the depending baffie,

partition or fuel mixture dividing means Ill exr5:

tending substantially longitudinally of the engine and which divides said riser in such a way as to form riser branches :1, which terminate in open communication with the fuel mixture distributing means whose height is designated at b and Whose 20, width is designated at b. The manifold branch portions l6 and I! are spaced apart laterally of the engine by the partition or dividing means 19, and communicate with the fuel mixture distributing means I 5. In Figure 3, I have illus- 25 trated by the reference character e the limits of said manifold branch portions or runners. The intake manifold structure is provided with a jacket portion 20 arranged in open communication with a portion of the exhaust manifold A1 so 30 that a portion of the exhaust gases of said engine may flow within this jacket portion 25) surrounding the riser portion It. The depending fuel mixture dividing means I9 is preferably integrally cast with the manifold structure and depends 35 below the fuel mixture distributing means as shown in Figure 2 and serves to divide the fuel mixture stream and to direct the same into said riser branches I4 as indicated by the character at. This fuel mixture dividing means I5! is pref- 40 'erably constructed with a gallery or passage 21! through which a portion of the exhaust gases of the engine may circulate for heating the said fuel mixture dividing means. Preferably this dividing means is provided with a flattened portion 2! extending substantially perpendicular to the axis of the riser, this flattened portion being heated and adapted to be engaged by the fuel mixture in said riser in order to apply heat to the fuel mixture in the riser and prior to the passage of said fuel mixture into said fuel mixture distributing means.

It will thus be noted that the fuel mixture is divided and heated within the riser and then distributed into the manifold branch portions of the engine substantially parallel with respect l6 and H, which preferably extend longitudinally of the engine and are arranged to conduct said fuel mixture to the engine cylinders II. It may be further noted that each manifold branch is arranged to be connected with Siamese ports and thus each branch is operatively connected with a pair of engine cylinders. Preferably the longer manifold branches ii are connected with the end cylinders and the shorter manifold branches l 6, which are laterally spaced outwardly of branches II, are connected with the i-ntermediate cylinders, the said shorter branches being preferably constructed to cross under said longer branches. It may be further noted that this construction provides for a uniform distribution of a fuel mixture to an eight cylinder in line internal combustion engine. 7

It may be noted that the particular embodiment of my invention shown in the accompanying drawing provides a partition or dividing means extending longitudinally of the engine,

and more particularly arranged substantially parallel with a vertical longitudinal plane of the engine, the branch riser portions formed thereby extending substantially vertical and substantially parallel to said plane and to each other to either side of said dividing means, while the branch portions or runners extend longitudinally to said vertical longitudinal engine plane; I preferably provide oppositely extending runners connected with each branch riser portion, the runners connected with one of said branch riser portions being separate from and laterally spaced from the runners connected with said other of said'branch riser portions;

The jacket portions which are arranged to conduct the exhaust gases of the internal combustion engine into heat transference relation with the fuel mixture in said riser may be placed in communication with the exhaust manifold of the engine in any suitable manner and I have 7 preferably arranged for the introduction of said exhaust gas through an inlet opening 22, said exhaust gas after circulating through the jackets 20 and 28 being exhausted through the outlets 23'into a coupling fixture 24 which is connected with the exhaust manifold structure A1.

It may be noted that I have provided means 'for conducting exhaust gas intermediate the riser branches .and below that part of the mani fold structure designated as the fuel mixture distributing portion.

In Figures 1 and 5 I have illustrated how the manifold branch portions are'provided with a flattened portion 40 in the bend of the manifold runner or branch portions lfi and II, this flat- -tened portion arrangedto deflect the fuel mixture flowing through said branch and direct the same in a predetermined direction in that part of the branch beyond said bend. It will be noted that the manifold branches are substanmy invention and have described in'detail but a single application thereof, it will be apparent to those skilled in the art to which my invention pertains that various modifications and changes may be made therein without departing from the 5 spirit of my invention or from the scope of the appended claims. 7

What I claim as my invention is:

1. An intake manifold structure for an internal combustion engine including a riser portion pro- 10 vided with riser branches spaced apart laterally of the engine, manifold branch portions communicating with said riser branches and extending longitudinally of the engine, and heated fuel mixture dividing means intermediate said riser 15 branches and extending substantially longitudinally of the engine.

2. An intake manifold structure for an internal' combustion engine including a riser portion having an enlarged portion, heated fuel mixture (11- 20.

viding means Within said enlarged riser portion and extending substantially longitudinally of the engine for providing riser branches spaced apart laterally of the engine, fuel mixture distributing means communicating with each riser branch, 25

and manifold branch portions communicating cylinder in line internal combustion engine in- 40 eluding a riser portion, heated fuel mixture dividing means within said riser portion and'extending substantially longitudinally of the engine, said dividing means cooperating with the external walls of said riser portion to form a pair of riser 45- branches spaced apart laterally of the engine,

fuel mixture distributing means communicating with each of'said riser branches, and oppositely extending manifold branch portions communieating with each of said fuel mixture. distributing means and extending longitudinally of the engine, each branch portion being connected with a pair of cylinders.

5. An intake manifold structure for a multicylinder in line internal combustion engine, a primary fuel mixture conducting portion, means Within said primary conducting portion and ex-. f tending substantially longitudinally of the engine for dividing said primary conducting portion and providing branch primary conducting portions spaced apart laterally of the engine, and oppositely extending runners connected with each of said branch primary conducting portions, the runners connected with one branch primary conducting portion being separate from the runners connected with the other of said branch primary conducting portions, the runners connected with each branch primary portion extending substantially co-axially and longitudinally of the engine, the runners connected with one branch primary 7 portion being offset laterally of the engine with respect to the runners connected'with the other branch primary portion. 7

6. An intake manifold structure for a multicylinder engine including a primary fuel mix- '1 ture conducting portion, branch conducting portions communicating therewith and extending longitudinally of the engine, and fuel mixture dividing means adjacent the junction of said conducting portions and extending substantially longitudinally of the engine, said branch conducting portions consisting of oppositely extending pairs of runners having axes respectively offset laterally from the axis of said primary conducting portion on both sides of said dividing means.

7. An intake manifold structure for a multicylinder internal combustion engine including a primary fluid conducting portion having an enlarged portion and a pair of secondary conducting portions branched from said primary portion at said enlarged portion, said secondary portions extending substantially in the same direction as the primary portion and offset laterally of the engine, dividing means at said enlarged portion and located intermediate said secondary portions, means for conducting the exhaust gases of said engine in heat transference relation with said dividing means whereby to subject the fluid flowing through said primary portion to heat, and lateral fluid conducting portions communicating respectively with said secondary portions and extending longitudinally of the engine.

8. An intake manifold structure for a multicylinder internal combustion engine including a primary fluid conducting portion having an enlarged portion and a pair of secondary conducting portions branched from said primary portion at said enlarged portion, said secondary portions extending substantially in the same direction as the primary portion and offset laterally of the engine, hollow dividing means at said enlarged portion and located intermediate said secondary portions, means for conducting the exhaust gases of said engine into the hollow interior of said dividing means whereby to subject the fluid flowing through said primary portion to heat, and lateral fluid conducting portions communicating respectively with said secondary portions and extending longitudinally of the engine.

9. An intake manifold structure for a multicylinder internal combustion engine including a primary fluid conducting portion having an enlarged portion and a pair of secondary conducting portions branched from said primary portion at said enlarged portion, said secondary portions extending substantially in the same direction as the primary portion and offset laterally of the engine, jacketed fluid dividing means intermediate said secondary portions, and lateral fluid conducting portions communicating respectively with said secondary portions and extending longitudinally of the engine, said manifold structure being provided with exhaust gas conducting portions communicating with said jacketed dividing means and overlying said lateral fluid conducting portions.

HAROLD H. TIMIAN. 

